During a Test Period,an Experimental Group of 10 Vehicles Using

question 79

Multiple Choice

During a test period,an experimental group of 10 vehicles using an 85 percent ethanol-gasoline mixture showed mean CO2 emissions of 667 pounds per 1000 miles,with a standard deviation of 20 pounds.A control group of 14 vehicles using regular gasoline showed mean CO2 emissions of 679 pounds per 1000 miles with a standard deviation of 15 pounds.At α = .05,in a left-tailed test,the critical value to compare the means (assuming equal variances) is

• A)−2.508
• B)−2.074
• C)−1.321
• D)−1.717

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Definitions:

Cash Inflows

The total amount of money being transferred into a business, usually from its operations, investments, or financing.

Capital Outlay

Expenditures for acquiring or upgrading physical assets such as equipment or property.

Average Rate of Return

A measure of the profitability of an investment, calculated by dividing the average annual profit by the initial investment cost.

Present Values

The current valuation of a future financial gain or series of payments, after applying a specific return rate.